linux-kernel - Re: [i915]] *ERROR* mismatch in scaler_state.scaler

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Date:	Thu, 7 May 2015 20:24:23 +0900
From:	Sergey Senozhatsky <sergey.senozhatsky@...il.com>
To:	"Konduru, Chandra" <chandra.konduru@...el.com>
Cc:	Daniel Vetter <daniel@...ll.ch>,
	Sergey Senozhatsky <sergey.senozhatsky@...il.com>,
	David Airlie <airlied@...ux.ie>,
	"Vetter, Daniel" <daniel.vetter@...el.com>,
	"intel-gfx@...ts.freedesktop.org" <intel-gfx@...ts.freedesktop.org>,
	"dri-devel@...ts.freedesktop.org" <dri-devel@...ts.freedesktop.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [i915]] *ERROR* mismatch in scaler_state.scaler_id

On (05/07/15 00:40), Konduru, Chandra wrote:
> 
> Hi,
> This error happens when crtc_state in driver not matching with hardware registers.
> On skylake board that I have, I am not able to reproduce the issue.
> Can you send the system configuration and steps to reproduce the issue?
> Also can you send the full dmesg.log file?
> 

Hi,
there are no specific steps, happens during boot and every time the screen
goes unblank. attached dmesg, .config.

~$ lspci 
00:00.0 Host bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor DRAM Controller (rev 06)
00:01.0 PCI bridge: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor PCI Express x16 Controller (rev 06)
00:02.0 VGA compatible controller: Intel Corporation 4th Gen Core Processor Integrated Graphics Controller (rev 06)
00:03.0 Audio device: Intel Corporation Xeon E3-1200 v3/4th Gen Core Processor HD Audio Controller (rev 06)
00:14.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB xHCI (rev 04)
00:16.0 Communication controller: Intel Corporation 8 Series/C220 Series Chipset Family MEI Controller #1 (rev 04)
00:1a.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #2 (rev 04)
00:1b.0 Audio device: Intel Corporation 8 Series/C220 Series Chipset High Definition Audio Controller (rev 04)
00:1c.0 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #1 (rev d4)
00:1c.5 PCI bridge: Intel Corporation 8 Series/C220 Series Chipset Family PCI Express Root Port #6 (rev d4)
00:1d.0 USB controller: Intel Corporation 8 Series/C220 Series Chipset Family USB EHCI #1 (rev 04)
00:1f.0 ISA bridge: Intel Corporation HM86 Express LPC Controller (rev 04)
00:1f.2 SATA controller: Intel Corporation 8 Series/C220 Series Chipset Family 6-port SATA Controller 1 [AHCI mode] (rev 04)
00:1f.3 SMBus: Intel Corporation 8 Series/C220 Series Chipset Family SMBus Controller (rev 04)
01:00.0 3D controller: NVIDIA Corporation GK107M [GeForce GT 750M] (rev a1)
02:00.0 Network controller: Intel Corporation Wireless 7260 (rev 93)
03:00.0 Ethernet controller: Realtek Semiconductor Co., Ltd. RTL8111/8168/8411 PCI Express Gigabit Ethernet Controller (rev 0c)

/* 01:00.0 3D controller: NVIDIA Corporation GK107M not used */

	-ss

View attachment "_dmesg" of type "text/plain" (81555 bytes)

View attachment "_config" of type "text/plain" (74612 bytes)